e-lectures Flashcards
what are prominent structures seen on the inferior border of the hypothalamus (ventral view)
2 mammillary bodies
on ventral view of brainstem, what is the prominent features
2 cerebral peduncles (white matter, with axons running between the pons and thalamus)
superior CP- info from mid-brain to cerebellum
middle CP- info from pons to cerebellum
inferior CP- info from medulla to cerebellum
what is the region in between the 2 cerebral peduncles called
the inter-peduncular fossa
the floor of the 4th ventricle is made of …..
the roof of the 4th ventricle is made of …
floor= medulla and pons. floor of 4th ventricle= ‘rhomboid fossa’
roof=cerebellum
what structure passes through the closed medulla
the central canal
prominent features on dorsal aspect of midbrain
2 superior and 2 inferior colliculi
the trochlear nerve is the only nerve to leave on the blank aspect of the brainstem
dorsal
all other cranial nerves leave on ventral
(dorsal aspect)
through midline of medulla, there are 2 tracts visible called…
cuneate fassicle- runs lateral
gracile fassicle - runs against midline
what is the function of ‘fassicles’
to take sensory fibres from the spinal cord into the medulla (dorsal column pathway)
the fassicles converge at the junction of open/closed medulla to form gracile/ cuneate tubercles (housing cell bodies)
transverse section of midbrain we would see
substantia niagara, contains dopaminergic factors. these fibres are damaged in parkinsons
midline of cerebellum, runs the
vermis
ventral view of cerebellum: embedded within the LCH/RCH is the …
FLOCCULUS and the NODULE
which together form the floccular nodular lobe
the olfactory nerve is distinct in that it does not have pairs rather…
it is made of MANY SMALL THREADS which dilate into olfactory BULBS which sit on the cribriform plate
